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A solution of a substance ‘X’ is used for whitewashing. (i) Name the substance ‘X’ and write its formula. (ii) Write the reaction of the substance ‘X’ named in (i) above with water. Why can't that substance X be Ca(OH)2 ? |
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Answer» ONG>Answer: i)CaO= calcium oxide ii)CaO+H2O=Ca(OH)2 Substance X can't be Ca(OH)2 because in QUESTION the substance is asked not the solution (mixture of a substance and a liquid). So the substance is CaO and it's solution with WATER is Ca(OH)2. Hope it helps. |
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